Solution to Exercise

• One approach is to write six subnet resources
• Better way could be if we can use some kind of looping
• If there is a way to write loops it would simplify the resource creation.
• We can create multiple resources by using count meta-data Refer Here

resource "resource-type" "name-of-resource" {
    count = <number-of-resources>
    arg1 = val1
    ...
    argn = valn
}

• Example

resource "aws_vpc" "my_vpc" {
    count = 0
    cidr_block = "192.168.0.0/16"

}

• We can also control the creation of resources based on conditional expressions Refer Here
• We should also understand deployment strategies
  • red-green/blue-green
  • canary deployment